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https://issues.apache.org/jira/browse/FLINK-21392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335903#comment-17335903
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Flink Jira Bot commented on FLINK-21392:
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This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> Support to block in connected streams
> -------------------------------------
>
> Key: FLINK-21392
> URL: https://issues.apache.org/jira/browse/FLINK-21392
> Project: Flink
> Issue Type: New Feature
> Components: API / DataStream
> Reporter: Timo Walther
> Priority: Major
> Labels: stale-major
>
> In many scenarios that involve control streams when using connected streams,
> users would like to wait until stream A is "ready" before processing the
> stream B.
> Internally we already provide input selectable semantics but with problems
> around checkpointing. Once those problems are solved, we should expose this
> functionality in the main API.
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